Cash register



Dec. 6, 1927. 1,652,087

W. W. BOWMAN CASH REGISTER .Filed Jan. 8, 1925 Z Sheets-Sheet 1 gwvrmtoz Hi8 attouwqv William W. Bowman 7 Dec. 6, 1927. 1,652,081

w.-w. BOWMAN I CASH REGISTER Filed Jan. 8, 1925 2 Sheets-Sheet 2 FIG.3

gvwmdov William W. Bowman Pasta D... 6,1 9.... 1,652,087.

UNITED STATES'PAT-ENT AOFFICE.

WILLIAM w. BOWMAN, or DAYTON, onto, AssIeNoaBY MESNE ASSIGNMENTS, TO THE NATIONAL CASH REGISTER conrANY, or DAYTON, OHIQ, A CORPORATION on MARYLAND. c

1 7 CASH nners'rnn.

Application filed January 8, 1925;v serial No. 1,198.

' 'This invention relates to cash registers, each of whichis adapted to carry the record and more particularly to improvements in and a'rib'bon 33 against type carriers 32, impression hammers of the kind used in'mathereby taking an impression therefrom. chines" of the type shown and described 111 An actuator35 is provided for each hammer. Letters Patent of the .United States, No, Allof the actuators are loosely mounted on 1,311,884, issued to Frederick 'L. Fuller, I a stud36 mounted in theframes 37. -Each August 5, 1919, and a co -pending applicatlon actuator has an extension 38, which is by Bernis M. Shipl-ey .Serial'No. 610,273, adapted to engage a stud 39 mounted on filed January 2, 1923. the corresponding impression hammer 34. 10 The principal object ofthis-invention is rrspring 1'7 stretched between a shaft 46 to provide mechanism to prevent rebound of and a stud 45 on the actuator 35, normally spring-actuated printing hammers. tends to rockthe actuator in a counterlViththis and incidental objects in view, clockwise direction against a yoke 50. The the invention consists of certain novel feayoke 50 has downwardly extending arms 51 I 15 tures of construction'and' combinations of and 52. The arm 51 has mounted thereon parts, the essential elements of which are a stud 55, which is engaged by a link 56, set forth in appended claims and a preferred (Fig. 2) pivoted to the lower end 57 (Fig. 1) form of embodiment of which is hereinafter of a bell crank 58. The upper arm 59. of described with reference to the "drawings the bell crank 58 is adapted to engage a cam which accompany and form a part of this 60 on a shaft 61, which may be driven in specification. p r any suitable manner. 7

Of said figures; In the above mentioned patent and ap- Fig. 1 is aside elevation of the printing plication the shaft 61 is driven from the hammers and their associatedmechanism. main operating shaft of the machine, which Fig. 2 is an enlarged detail side view of a is in turn driven by 'a motor.

part of the mechanism shown in Fig. 1. The cam 60 is slidably mounted on the Fig. 3 isa plan view ofthe mechanism shaft 61 andv is providedfwith two high shown in Fig. 1. points 62. One of'the high points extends across the full width and the other only V V halfway across theca'm. The purpose of In impression hammer mechanisms of the this construction is to provide means to c'on type herein disclosed, each hammer is actutrol the hammers for taking one or two imated .by a powerful spring, which'when re. pressions. This mechanism forms no part leased forces the hammer against the type of the present invention and no further de- 35 carriers with a sudden blow. In the above scription is thought necessary. A complete mentioned co-pending application, when'the disclosure and description can be had by rehammer falls back to its normal. position it fer-ring to the above mentioned co-pending e strikes its actuator and stretches the drivapplication. ing spring, which causes the hammer to ro- When the cam 60 isrotated in a c0unter' 40 bound and in some instances this rebound is clockwise direction, the high points 62 theresufficient to cause a second impression to" be on will engage the arm 59 of the bell crank made. In the present application an 1111? 58 and rock it in a. clockwise direction. yielding member 'is provided, to prevent this This movement will be transmitted Y to the rebound and thereby prevent the hammer act ator 35 by th li k 56 d k 5() Th 15 from. striking the type, carriers the second stud 39 on the hammer 34 is normally held timedisengaged from the actuator 35 by mecha- 30 In general.

lmpresswn mechanism yoke 50 starts tomove, the stud 39 is held in In machines of a type to which the invenengagement with the actuator by a spring 65 .10 tion is shown applied, a record 30 (F 1g. 1) 1s stretched between a stud 66 on the actuator placed upon a table 31. Any number of im- 35 anda stud 67 on the hammer 34. When nism to be hereinafter described. After the pression hammers 34: may be provided. In a high point 62 of the cam 60 passes the the present application seven are shown, outer end of the arm 59, of the bell crank 58,

, impression.

the spring at? will rotate the actuator apidly in a counter-clockwise direction until the yoke is stopped by a lugon the base 71, ot' the machine. The momentum given to the hannner Eli by the spring 47 issutticient to carry it on independently .tioned application, when the hammer returns to normal it strikes the actuator 35 and stretches the spring 47, thereby causing the hammer to rebound. This rebound is 1n someinstances sufiicient to cause a second impression to be made. i

A mechanism is provided in the present application to prevent the hammer from striking the actuator and thereby prevent this rebound, and will now be described. A. rod is carried by two arms 76 loosely mounted on the beitore mentioned shaft 46. One end of a link 77 is pivoted to one of the arms 76, and itsother end is pivoted to an arm 78 which loosely mounted on a shaft 79, carried by the frames 37. The arm 78 has a slot 80 cut therein, into which extends a stud 81. mounted on an arm 82 pivoted on the shaft 36. A spring 85 provided to keep the slot 80 in proper relation with the stud 8. This spring 85 is wound around the shaft 46, and one end engages one of the arms 76, and the other end engages thebase 71. The arm 82 is providedwith two shoulders 83, between which the yoke member 50 is adapted to lit, as shown in Fig. 2.

. When the yoke 50 is rocked by the cam 60, it will rock the arm 82, and through the stud 81 will rock arm 78. The first movement of the yoke will rock the arms 76. through the link 77, in a countcr-cloclnvise direction. and. thereby rock the rod 75 from beneath all of the hammers 34.

When the high points (it! of the cam (50 pass the outer end of the arm 59 oi the bell crank 58, and the spring LT rapidly rotates the yoke 50 and the actuator in a counterclockwise direction as above described. the arm :82 will return the rod; 75 to theposition shown in Fig. The rod 75 will reach its home position when the yoke 50 stomped hy the lug 70. At this time the hammer is travelling by its own momentum to take the impression. hen the hammer returns to its home position the rod 75 will. be in position to be engaged by the hamme' and prevent it from engaging the actuator 35, thereby preventing the hammer from rebounding against the type carriers andtaking a second \Vhile the form. of mechanism herein shown and described is admirably adapted to fulfill the objects primarily stated, it is to beunderstood that it not intended to conline the inventionto the one term of embodiment herein disclosed, "for it is susceptible oil embodiment in various forms all coming within the scope ol' the clailnswhich follow. Y

.What claimed is:

1.. The combination of a plurality of impression hammers, type carriers, :1 spring mtuated means for ('lriving each of the hammers against the type carriers :lfor taking an impression therefrom, and. a single means for arresting all of the hammers after the impression has been taken to prevent allot said hammers from engaging the spring actuated means. i a

2. The combination of a plurality of impression hanjnners, a springactuated means for driving each of said hammers against the type carriers for taking an in'ipression therefrom, and a single means for arresting the hammers after the im n'ession has been taken to render said spring actuated means inefi'ective. y i

3. Thecombination of plurality of impression hammers, type carriers, a spring driven actuator for each hammer, a single driving means for positively driving said actuators in one direction, and a single means interposed between said hammersaml said actuators when in the home position, said interposed means being disengaged from the hammers by the driving means when the driving meansbegins to ope ate.

4:. The combination of an impression hammer, type carriers, spring-actuated means for driving the hammer against the type carrier for taking an impression therefrom, and means for arresting the hammer after the impression has beentaken to prevent said .hammer from engaging the springeactuated means.

5. The eombinati on of an impression hammer, type carriers,spring-actuated means for driving said hammeragainst the type carriers :tor takingan in'ipression theiet'rom, and means tor arr am n-1e hammera tter the i npression has been. taken torender the spring-actuated means ineffective.

6. The combinationot an in'ipression hammer, an actuator therefor, said hanilner be ing resilient l y connected, to the actuatorwhen being actuated herehy, aspiring tor driving said actuator. means {or stoppihg said actuator, and means controlled independently of said actuator for. preventing tliehannner from engaging the actuator when the h anlmer returns to itshome position.

T. The combination oi an impression hammer, a spring driven actuator therefor, a spring-tor engaging the hammer with the actuator when the actuatoris being driven pr or to actuatingthe hammer for taking an impression and means independent of said Ell) tor for each of said hammers,' a springtor engaging each hammer with its actuator when'the actuators are being driven prior to pression has been taken.

actuating the hammer for taking an impres sion, and a single means independentof said actuators for preventing all of the hammers from engaging the actuators after the im- 9. The combination of an independently movable impression hammer, a spring-actuated driving means for said hammer, means for positively actuating vsaid driving means in one direction and for suddenly releasmg said driving meansto permit t to actuate 'the hammer, means for stopping said driving means after it has been suddenly released,resil1ent means forcarrying the haminer with the driving means when said ClI'lV-- ing means is being positively actuated said resilient means permitting independent movement of said hammer after said driving means has been stopped, and means for stopping the hammer before it engages the driving means after the impression has been taken. 7

In testimony whereof Iafiix my signature.

' WVILLIAM W. BOW'MAN. 

